New Delhi, July 24 : Priyanka Chopra has launched the trailer of her upcoming biopic drama film 'Mary Kom' along with director Sanjay Leela Bhansali and producer Omung Kumar, in Mumbai.

Speaking about the film in which she is playing the role of Olympic boxing champion Mary Kom, the 'Agneepath' star said, "Whatever I am playing, especially a biopic on a living, breathing person who is almost my age, that was the most difficult thing for me to do. If we are working on a biopic, we have to be very particular".

"I had to learn boxing twice as we had done the film in two big schedules and had to undergo a lot of training. All of it comes with the territory", she added.

' Mary Kom' is slated to release on 5th September 2014. (ANI)